Solutions by everydaycalculation.com
1st number: 9/12, 2nd number: 7 0/12
912 - 8412 is -254.
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Related: 18/12-84/12 9/24-84/12 9/12-84/24 27/12-84/12 9/36-84/12 9/12-84/36 45/12-84/12 9/60-84/12 9/12-84/60 63/12-84/12 9/84-84/12
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